Combined lock and latch.



No. 728,755. PATBNTED M Y'19,-'19os.

I M. c. PATRICK.

COMBINED LOCK AND LATCH.

APPLICATION FILED AUG. 13, 1902.

2 SHEETS-SHEET 1.

1m MODEL.

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COMBINED LOOK- AND LATCH. APPLICATION IILED AUG, 13, 1902. no MODEL. 2snnn'rs-snnnmz.

UNITED STATES Patented May 19, 1903.

MARCUS O. PATRICK, OF SEATTLE, WASH TNGTON.

COMBINED LOCK AND LATCH.

SPECIFICATION forming part of Letters Patent No. 728,755, dated May 19,1903. Application filed August 13, 1902. Serial No. 119,569. (No model.)

To aZZ whom it may concern.-

Be it known that I, MARCUS O. PATRICK, a

citizen of the United States, residing at Seat;

tle, in the county of King and State of Washington, have invented newand useful Improvements in a Combined Lock and Latch, of which thefollowing is a specification.

This invention relates to a combined lock and latch of that type inwhich the key-operated mechanism isinclosed in the knob and operates toprevent the latter from being operated, so that the bolt of the lockcannot be drawn back from the outside; and the object of the inventionis to provide a device of this character which is simple in constructionand which consists of a comparatively few parts and which is effectiveand positive in action.

The objects and advantages of the invention will be set forth at lengthin the following description, and the novelty thereof will form thebasis of the claims succeeding said ticularly described, being shown incross-sew tion. Fig. 4 is a sectional plan view of the same, a portionof the inner escutcheon-plate being also shown. Fig. 5 is a Viewcorresponding to Fig. 2, but illustrating the inner escutcheon-plate.Fig. 6 isa perspective view of the spindle for actuating the locking anddead-locking plates and certain cooperative parts, the several elementsbeing shown as separated; Fig. 7 is a similar view of a plug andactuator, the same being shown as being detached. Fig. 8 is an elevationof the outer knob.

Likecharacters refer to like parts figures of the drawings. 7

Referring to the drawings, the numeral 1 indicates a casing for the bolt2, said bolt being of a sliding kind and its Working end being adaptedto enter a catch or keeper plate set into a mortise in the frame of thedoor.

in all the a mortise in the door. As the keeper-plate for the bolt formsno part of the present invention I have not'deemed it necessary toillustrate the same. The outer end or head of the bolt is beveled, as isthe custom in this class of devices, while the inner end of the saidbolt is bifurcated to form arms 3, disposed in parallelism. The bolt isnormally held in its effective position by means of a parallelcoil-spring 4 bearing against the same and against suitable stops in thecasing 1.

The inner and outer escutcheon-plates are denoted, respectively, by 5and 6, and they are adapted to be secured to the corresponding faces ofthe door. Said plates are'provided centrally, or substantially so, withbosses 7 and 8, respectively, which, if desired, may be formed integralwith the respective escutcheon-plates.

The numeral 9 indicates the inner knob, the spindle of which isrotatably fitted in the inner boss 7, the innerend of said knob-spindle,which is denoted by 10, being surrounded by a gear 11, suitably securedthereto and which prevents the withdrawal of the knobspindle 10 from itsboss. This is one of the purposes of the gear 11. Another one will behereinafter set forth. The outer knob is denoted by 12, its spindle 13being rotative in the outer boss 8. Said spindle 13 has upon its innerend a squared extension or shank 14, which is adapted to enter thesimilarly. shaped bore ofthe hollow spindle 10 of the inner knob, sothat the two knobs, as will be understood, are rotatably connected,whereby when one is turned the other will be likewise operated. It willbe obvious that the Likewise the casing 1 for the bolt is fitted intosquared extension 14 is slidably fixed in the The square extension orshank 14 of the outer-knob spindle extends throughasquare perforation inthe hub 16, such hub being provided with arms 17, adapted to cooperatewith the lugs 18 on the arms 3 of the sliding bolt, the parts being soarranged that when the outer-knob spindle is turned by the knob 12 oneor theother of said arms 17 will engage a lug 18, so as to draw back thesliding bolt 2.

The gear 11, to which reference has been made, meshes with the pinion19, adapted to rotate upon one of the studs 20, two of such studs beingshown at opposite sides of the inner escutcheon-plate, so as to make thelock either a right or left hand one. The square shank or shaft 21extends centrally inward from the pinion 11 and projects through asquare perforation in the hub 22, said hub being provided with arms 23,like the arms 17, hereinbefore described, and which are adapted tocooperate with the lugs 24 upon the arins 3 of the bolt, it being seenthat each arm carries two lugs situated at different points in itslength. When the inner knob is turned, the square shank, throughintermediate meshing gears 11 and 19, will be turned so that one or theother of the arms 23 by acting against the cooperating lug 24 can drawback the bolt. WVhat might be considered the outer lugs 24 have undercutinner faces, so as to allow an ample swing for the arms 17.

The collar or ring 15, which, it will be remembered, is fastened to theouter knob-spindle, has diametrical opposite notches or slots 25, one ofwhich is normally adapted to receive the tooth 26 of the slidinglocking-plate 27, which is shown as being substantially rectan gular andwhich operates against the outer escutcheon-plate 6. Said locking-plate27 I has at or near its center an enlarged slot 28,

through which the outer knob-spindle and its collar extends, it beingseen that the tooth 26 depends from the upper wall of the slot 28. Thelocking-plate is of the gravity kind, its tooth or projection beingadapted to fall into one or the other of the diametrically oppositeslots 25, and when said tooth is situated in one of the slots it will beapparent that neither of the knobs can be turned. The lockingplate islifted so as to carry the tooth 26 thereof out of a cooperating slot 28by key-operated means, as will now appear.

A barrel 29 is fixedly secured in the outer knob 12, it having upon itsclosed outer end a keyhole-slot for'the reception of the key 30. Saidbarrel is adapted to receive for rotary movement the cylinder 31, andthe plug 32, also cylindrical in form, is set in the adjacent face ofthe cylinder 31. The inner end of the plug is provided at its outer edgewith horns or projections 33, which extend into the channel 34, formedin the reduced cylindrical portion of the outer-knob spindle. Thesehorns are also disposed in the slot of the plate 36, slidable in saidchannel 34. Said plate 36 constitutes an actuator for the gravitativelocking-plate 27, it being adapted to be operated through theintervention of the key 30 to lift the tooth 26 of said lockingplate outof the slot 25 in the collar 15, in which it may be seated, so as torelease the knobs, so that they can be turned to draw back the bolt.When the plug 32 is turned by a key, the horns or projections 33 thereonengage the plate 36 and lift the same, wherebysaid plate by engaging thetooth 26 can move said tooth out of the slot 25. To prevent the plug 32from being turned too far, the ends of the actuator or plate 36are'provided inside the same and centrally thereof with stops 38,adapted to be engaged by the horns for the purpose set forth.

The cylinder 31 and its barrel have cooperative pockets 39 to receiveballs 40 in groups of different numbers, whereby when the proper key isintroduced into the slot of the cylinder 31 such balls will drop intothe notches or saddles of the key and permit the cylinder to be turnedthereby, so as to operate the locking-plate 27 in a manner to effect therelease of the knobs.

The escutcheon-plates are held to the door by any suitable means, oneeffective form of which will now be set forth. A block is shown at 41,it being fastened by screws or rivets to the inner surface of the outerescutcheon-plate 6 and having aslot 42, through which a tongue 43 at thelower end of the slidablelocking-plate 27 projects. A threaded stud 44projects from the block 41 and is adapted to receive an elongated nut45, which extends through a perforation in the inner escutcheon-plateand terminates in the head 46. The block 41 with its threaded stud 44,in connection with the headed tubular nut 45, hold the plates togetherat one end. thereof, screws 47 being provided to hold them together atthe opposite end, such screws being passed through perforations in theinner escutcheon-plate and being tapped into the outer escutcheon-plate.The locking-plate 27 has near its upper end the enlarged slot 48, inwhich the block 49 is disposed, the tubular externally-threaded stud 50extending inward from the block and adapted to receive the elongated nut51, said nut having a slotted head by which it can be adjusted on thesaid tubular stud.- This tubular stud forms a seat for the sleeve 52,said sleeve having a toe or cam 53 at its outer end adapted to work inthe slot or channel 54 of the block 49, and the purpose of this too orcam 53 is to operate the locking-plate 27 by engaging the upper-wall ofthe slot 48 in said locking-plate, so as to lift the tooth 26 of saidlocking-plate out of its effective position. The bore of the sleeve 52is square in cross-section and is adapted to slidingly receive acorrespondingly-shaped portion of the shank 55, the said shank having asliding movementin the sleeve, so as to adapt the two parts, which arein thenature of a unitary spindle, to doors of different thicknesses.The shank 55 terminates-at its inner end in the knob 56, by which thesame, and hence the sleeve 52, can beoperated, said knob having onitsinner side apin 57, adapted normally to be seated in the perforationin the inner escutcheon-plate and to be held therein by the spring 58encircling the cylindrical portion of the shank 55 and bearing against aplate 59 and also against the projection 60 of said shank. The plate 59is centrally apertur'ed to receive said shank and is suitably secured tothe inner face of the inner escutcheon-plate. Said shank 55 has a cam61, adapted to work in the channel 62 of said plate 59 and to actuatethe dead-lock plate 63. The dead-lock 63 is adapted to move by its ownweight into its operative position, it having teeth 64 at its lower endadapted to engage the teeth of the gear 11, and it will be apparent thatwhen such teeth are in engagement the gear, and consequently the knobs,cannot be turned. The dead-lock plate 63 has an enlarged slot 65,through which the shank 55 extends, said dead-lock plate being slidableagainst the inner escutcheon-plate.

The cams 53 and 61 are so disposed that they can lift the locking anddead-locking plates 27 and 63 out of their working position or so thatone or both of said plates can drop into the efiective position thereof.

To operate the shank 55, and hence the sleeve 52, to secure the actionof said cams, the pin 57 will be withdrawn from its seat, so that theknob 56 can be turned, and when the desired operation has been effectedthe said pin will be automatically drawn into its seat by the action ofthe spring 58, in which condition it will be maintained by said spring.

The improved lock is simple and thoroughly effective, its parts can beeasily made and quickly assembled, and by virtue of the mechanism setforth the lock can be so set that the knobs can be operated simply byturning the same without a key or they can be dead-locked or set so thatthey may be operated by the use of the proper key.

The invention is not limited to the exact construction hereinbefore setforth, for many variations may be adopted within the scope of thefollowing claims.

Having described my claim is- 1. In a combined lock and latch, thecombination with a bolt, a knob, connections between the knob andthebolt for operating the latter, including intermeshing gears, adeadlocking device having teeth to mesh with one of the gears, and meansfor controlling said dead-locking device.

2. In a combined lock and latch, the combination with a bolt, a knob,key-operated means for effecting the operation of said knob, connectionsbetween the knob and the bolt for operating the latter, includingintermeshin g gears, a dead-locking device having teeth to mesh with oneof the gears, and means for controlling said dead-locking device.

in vention, what I 3. In a combined lock and latch, the combination witha bolt, a knob, connections between the knob and bolt for operating thelatter, including intermeshing gears, a slidable plate having teeth tomesh with one of the gears, and means for cont-rolling said slidableplate.

4. In a combined lock and latch, the combination with a bolt, a knob,connections between the knob and bolt for operating the latter,including intermeshing gears, a gravitative dead-locking plate havingteeth to mesh with one of the gears, and means for controlling saiddead-locking plate.

5. In a combined lock and latch, the combination with a bolt, a pair ofknobs each havingaspindle, one of said spindles being fitted into theother and being rotatively connected together, a hub on one of thespindles provided with means for actuating said bolt, a gear on theother spindle, and a second gear meshing with the first gear, a spindleconnected with the second gear, ahub connected with said last-mentionedspindle and provided with means for actuating said bolt, a dead-lockingdevice provided with teeth to mesh with the firstmentioned gear, andmeans for controlling said dead-locking devlce.

6. In a combined lock and latch, the combination with a bolt, a knob,connections between the knob and bolt for operating the latter,including intermeshing gears, a deadlocking device having teeth to meshwith one of the gears, a locking device for said knob, and a devicehaving means to control both the locking device and the dead-lockingdevice.

7. Ina combined lock and latch, the com-.

bination with a bolt and knob, connections between the knob and bolt foroperating the latter, a collar rotative with the hub and having a slot,a bolt provided with a tooth to enter said slot, key-operative meansrotative with the knob for moving said tooth into its ineffectiveposition, and means operable independently of said key-operative meansfor also moving said bolt into its ineifective po sition.

8. In a combined lock and latch, the combination with a bolt, a knob,connections between the knob and bolt for operating the latter, a collarconnected with the knob for rotation therewith and having a slot, a boltprovided with a tooth to enter said slot, a key-operated actuator forsaid tooth, carried by the knob, said actuator serving to move the toothinto its inefiective position, and means operable independently of saidactuator for also moving the tooth into its ineffective position.

9. In a combined lock and latch, the combination with a bolt, a knob,connections between the knob and bolt for operating the latter, a collarconnected with the knob for rotating therewith and having a slot, alocking-plate provided with a tooth to enter said slot, a slottedactuator carried by the knob and adapted to actuate said tooth, and akeyoperated plug carried by the knob and having a projection fitted inthe slot in said actuator, and adapted to operate the latter.

10. In a combined lock and latch, the combination with a bolt, a pair ofrotatively-connected. knobs, connections between the kn obs and bolt foroperating the latter, locking and dead locking plates cooperative withthe knobs and a spindle having means for controlling both the lockingand dead-locking plates.

11. Ina combined lock and latch, the combination with a bolt, a pair ofrotativelycon-

